Watts 152SS-30-140 1/2 - Part of the 152SS Series ZA100F-8NH This 1/2 inch bronze combination

This 1/2 inch bronze combination dial set fill valve and backflow preventer is for use in commercial and residential hydronic heating systems to provide make-up water to the boiler

Anchor flange for stable

ZN1920-8NL

It has solder connections

a fixed 12¾″ × 12¾″ square top with a heel-proof ductile-iron grate

Watts 152SS-30-140 1/2 - Part of the 152SS Series ZA100F-8NH This 1/2 inch bronze combinationThis 1 2 inch stainless steel process steam pressure regulator is designed to offer a highly sensitive response to reduced pressure changes and maintains the fullest possible volume without appreciable reduced pressure drop. It is appropriate for use for applications such as oil lines, testing fixtures, autoclaves, steam tables, steam irons, single radiators, vulcanizers, sterilizers, and process lines. This valve consists of a stainless steel body